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公开(公告)号：US5501776A
公开(公告)日：1996-03-26
申请号：US154406
申请日：1993-11-19
CPC分类号： B01D3/343 , B01D3/143 , Y10S159/33 , Y10S203/09
摘要： For the regeneration of a liquid desiccant, a stripping agent is used which is liquid at ambient temperature and pressure, and forms a heteroazeotrope with water, along with the following steps: (a) distillation of the water-laden liquid desiccant to form vapor and partially regenerated liquid desiccant; (b) reboil partially regenerated liquid desiccant; (c) stripping of partially regenerated liquid desiccant during (a) and (b), using vaporized stripping agent; (d) a condensing of vapor the exiting the distillation, the condensation producing two liquid phases, one mainly water and the other mainly stripping agent; (e) heating the stripping agent-rich liquid phase exiting step (d) to generate a vapor phase which is richer in water than said liquid phase and a water-depleted liquid phase; and (f) returning the vaporized liquid phase exiting step (e) to step (c).
摘要翻译： 对于液体干燥剂的再生而言，使用在环境温度和压力下为液体的汽提剂，并与水形成杂合物，以及以下步骤：（a）蒸馏含水液体干燥剂以形成蒸汽， 部分再生液体干燥剂; （b）再沸部分再生液体干燥剂; （c）使用蒸发汽提剂在（a）和（b）中汽提部分再生液体干燥剂; （d）蒸馏出来的蒸气冷凝，冷凝产生两个液相，一个主要是水，另一个主要是汽提剂; （e）加热离开步骤（d）的汽提剂富液相以产生比所述液相更富水的水蒸气相和贫水液相; 和（f）将离开步骤（e）的汽化液相返回到步骤（c）。
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2.发明授权Method for dehydrating a wet gas using a liquid dessicant, with advanced regeneration of said dessicant 失效使用液体干燥剂使湿气脱水的方法，所述干燥剂的进一步再生公开(公告)号：US06461413B1
公开(公告)日：2002-10-08
申请号：US09555643
申请日：2000-11-27
IPC分类号： B01D5314
CPC分类号： B01D53/263 , C10L3/10
摘要： In a process using a hydrophilic liquid desiccant, for dehydrating a gas containing water with regeneration of the steps of: (a) absorbing water by contact between the moist gas and regenerated liquid desiccant from step c), producing a dry gaseous effluent and a stream of liquid desiccant charged with water and absorbed gases; (b) regenerating the liquid desiccant charged with water in a regeneration zone constituting a reboiling zone and a distillation zone, the charged liquid desiccant being sent to said distillation zone, from which a vapor containing water leaves overhead and from which liquid desiccant still containing water leaves from the bottom in the reboiling zone; (c) passing the liquid desiccant from the reboiling zone of step b) and still containing water to an absorption zone, in which the water in the desiccant is vaporized and the water vapor is absorbed by a fraction of regenerated or non regenerated desiccant, passing the resultant desiccant which has absorbed water vapor to the reboiling zone of step b) and returning resultant regenerated desiccant from the absorption zone, to the absorption zone of step a).
摘要翻译： 在使用亲水性液体干燥剂的方法中，用于通过再生以下步骤使含水的气体脱水：（a）通过湿气和来自步骤c）的再生液体干燥剂之间的接触吸收水，产生干燥的气态流出物和流 装有水和吸收气体的液体干燥剂; （b）在构成再沸腾区和蒸馏区的再生区再生装有水的液体干燥剂，将带电液体干燥剂送至所述蒸馏区，含蒸汽的水从该蒸馏区离开，并且还含有水的液体干燥剂仍含有水 从重沸区的底部出来; （c）将液体干燥剂从步骤b）的再沸区通过并仍然含有水到吸收区，其中干燥剂中的水被蒸发并且水蒸汽被一部分再生或非再生干燥剂吸收，通过 所产生的干燥剂已将水蒸汽吸收到步骤b）的再沸腾区，并将所产生的再生干燥剂从吸收区返回到步骤a）的吸收区。
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3.发明授权
公开(公告)号：US6004380A
公开(公告)日：1999-12-21
申请号：US738690
申请日：1996-10-28
摘要： A process for dehydrating a natural gas or refinery gas containing water and BTEX using a liquid desiccant (glycol) and including regeneration provides the following steps:(a) absorption of the water and the BTEX by contacting the gas with the liquid desiccant which has been regenerated in step (c), producing a dry gaseous effluent and the liquid desiccant charged with water and BTEX;(b) separating the charged liquid desiccant into a vapor containing a portion of the BTEX and a liquid phase containing mainly desiccant charged with water and BTEX;(c) regenerating the liquid desiccant in a distillation zone from which a vapor containing water and BTEX and regenerated liquid desiccant are extracted, the latter being sent to absorption step (a);(d) condensing the vapor from the distillation zone and separating it into three phases: a gaseous effluent containing BTEX, a liquid hydrocarbon phase containing BTEX, and an aqueous liquid phase; and(e) washing the gaseous effluent by absorbing the BTEX in a fraction of regenerated desiccant liquid removed from a point in the process and returning the desiccant to a point in the regeneration zone of step (c).
摘要翻译： 使用液体干燥剂（乙二醇）并包括再生来使含水和BTEX的天然气或炼油厂气体脱水并包括再生的方法提供以下步骤：（a）通过使气体与液体干燥剂接触而吸收水和BTEX 在步骤（c）中再生，产生干燥的气态流出物和装有水和BTEX的液体干燥剂; （b）将带电液体干燥剂分离成含有一部分BTEX的蒸汽和主要含有水和BTEX的干燥剂的液相; （c）在蒸馏区中再生液体干燥剂，从蒸馏区中提取含水和BTEX和再生液体干燥剂的蒸气，后者被送至吸收步骤（a）; （d）冷凝来自蒸馏区的蒸气并将其分离成三相：含有BTEX，含有BTEX的液态烃相和含水液相的气态流出物; 并且（e）通过从所述方法中移除的再生干燥剂液体的一部分中吸收BTEX来洗涤气态流出物，并将干燥剂返回到步骤（c）的再生区中的一点。
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